Lubricator



Dec. 6, 1927. 1,652,098

E. l. DODDS, JR

LUBRICATOR .Filed Feb. 26, 1925 Patented Dec 'fi, 1927.

7 written i itsao emcee THAN I. nonns, JR, or ()]-l1N"IRA.'LVALLEY, NEW YonK, ASSiGNOR, BY ivinsNn AS- 7 'sIeNMENTs, T FLANNERY BOLT COMPANY, or rrrrsnnnen, PENNSYLVANIA, A

CORPORATION or DELAWARE.

- Application as m al- 26,1923; seal ltd/521,379.

' This invention relates to improvements in lubrica-tors and more particularly to those of the] torce feed? typein which hard grease isp employed,jone object of the: invention forwardly to put pressure on the grease or move backwardly to permit the introduc tion of grease into the cup member without necessitating, in either case, theapplicat on of such an amountof force as might injure or disrupt the threads or other parts of the structure.

i A further object is to, so construct a lubricator of the type specified tha'tit shall be particularly well adapted for application to a link in the driving 1nechanis1n of a locomotive, and in which the parts which oper ate to hold the plunger against longitudinal movement in either direction, shall be protected and normally out of reach of anything which might, strike or otherwise injure the same.

With these and other objects in View, the invention consists in certain novel features of construction and combinations of parts as hereinafter set fforth and pointed out in'the claims.

In the accompanying drawings,

Figure ;1 is a view in elevation showing an embodiment of my invention. Figure '2 is a'sectional View.

Figure, 3 is a view in elevation showing the plunger.

Figure 4; is a view in elevation of the separate plunger-disk or head. V

Figure 5 is a bottom plan view of the plunger. V

Figure 6 is a top plan View of the plungerdisk or head.

Figure 7 is atop plan view of the cu member of the device, and t Figure 8 is a sectional view showing another embodiment of the invention.

A link such as employed in locomotive driving mechanism as indicated at 1 and may I be. provided with an integral boss 2 which forms a portion of the cup memberof my improved lubricator. The body portion 3 which also forms a part of said cup member is mounted against the boss 2 and these parts will preferably be welded. together, The

LUBnIoa'roit' body 3,niay, i'f desired, provided with an angular head 4 and said body, may be sulfi- .cie'nt in lengthand provided withexternal threads (not shown) to entera threaded hole inthe link 1, in which case the boss 2 on the linkinay be omitted.

The cup member, compr sing-the parts 2 and 3, is internally threaded tor the accommodation of an externally threaded plug or V plunger?) and the inner wall of said. cup member 18 provided with a longitudinal groove 6 for a purpose hereinafter explained.

The plug member 5 is provided at one end 1 with an angular, wrench-receiving head 7 and said plunger and head areformed with central bores 8.9 through which a, rod;or

bolt 10 passes, the head 11 of said bolt being disposed within the bore 9 andnear the. free end of the headfih ,A spring 12 disposed within the larger bore 9 bears against the bolt head 11 and'against a seat formed by the lower end of the bore 9. The spring actuatedbolt 10 carries at its lower or inner end, a separate plunger-disk or head 13 having an enlarged central portion which may enter a recess 14 in the'plug or plunger. The upper surface of the disk 'or head 13 is made with an annular series of cams 15 vented from turning. Turning movement of the head or disk 13 is prevented by means of a lug17 projecting from the same and entering the longitudinal groove 6 in the wall of the cup member of the device. The

bore 9 which contains a'portion of the bolt 10, its head 11and spring 12, is closed by a plate 18 welded to the part 7 of the plug or plunger, and thus the bolt will be protected within the plug or plunger member and accessthereto by unauthorized persons will be prevented. 1

WVith my im )rovement turnin force ma be applied to the plug or plunger one direction to cause the disk or head13 to move downwardly and apply pressure to the grease within the cup or it may be turned in the reverse direction to cause upward movement i 1 uro 8, the cup portion of the device may consist solelyof the integral boss 2. In this 'iorm of the invention, the bolt fit) and spring 12 may be dispensed with and the plug or plunger 5" may be "formed with u central bore it) closed at its outer end by the headed portion '20 and a spring 21 horneed in eaid bore is; connected at one end with the head 20 of the plunger and :it its other end with the disk 13,-sniddieh end plunger being provided with annular eeriee o't eo-ectingg; came, the same e hereinbe'tore described.

IIRVlIlQ' fully described my invention what I claim as new and desire to secure by Lettors-Patent, is:

1. In a luln'icetor the combination with a cup member, of a plug member titted in the cup member and engaged therewith to more longitudinally when rotated, said plug member being :lree of radial projections, a holding disk at the inner end of the plug member, said plug member being rotatable in either direction relative to the disk and having a central bore the outer end of which is permanently cloeeth means wherclily the dish, will normally hold the plug member against turning, and a spring housed in said. bore and operating between the plug and the dual; to hold the disk normally to the plug.

2. In a lubricntor, the combination with a cup member, and n plug mounted therein to move longitudinally when rotated, a looking}; diet at the inner end of the plug, the plugheing rotatable in either direction relative to the disk, means whereby the disk will normally prevent movement of the pl ug, a rod secured at its lower end to the disk passing through the plug and provided with a bend at its upper end, and an expansion epring permanently enclosed in the plug :zud bearing between the eame and the head (it the rod, the entire bottom area of the cup member being open whereby the plug and the (lisli may be moved entirely through the cup member.

In testimony whereof, I have signed this specification.

ETHAN I. DODDS, J11. 

